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    Monitoring and modeling of field infestations and damage by the maize ear borer Mussidia nigrivenella Ragonot (Lepidoptera: Pyralidae) in Benin, West Africa

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    Date
    2000
    Author
    Sétamou, M.
    Schulthess, F.
    Poehling, H.
    Borgemeister, C.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    In many countries in West Africa, the pyralid ear borer Mussidia nigrivenella Ragonot occasionally causes severe damage to pre- and postharvest maize. Between 1992 and 1995, the distribution of and damage caused by M. nigrivenella were studied in Benin using survey data and an on-station field experiment. The borer was distributed across the whole country, and at maturity an average 25% of the ears sampled in maize fields were infested. Damage levels varied with agro-ecological zones and were highest in the Guinea Savannas. However, borer-related yield losses were comparatively low. Three applications of cypermethrin over the growing season did not provide sufficient control in the on-station field experiment. A model was developed to estimate maize losses caused by M. nigrivenella, using the percentage of infested ears, which explained 93% of the variance. Extrapolation of field data indicated a 25% yield loss once a 100% infestation of maize ears was reached. For surveys in maize fields the model is a valid tool for a rapid assessment of crop losses caused by M. nigrivenella.
    https://doi.org/10.1603/0022-0493-93.3.650
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/5273
    Digital Object Identifier (DOI)
    https://doi.org/10.1603/0022-0493-93.3.650
    IITA Subjects
    Maize; Post-Harvesting Technology; Plant Ecology; Plant Production
    Agrovoc Terms
    Maize; Ecological Zones; Yields
    Regions
    Africa; Acp; West Africa; Europe
    Countries
    Benin; Germany
    Collections
    • Journal and Journal Articles4835
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